12
Left Hand Cutters
Right Hand Cutters
•
• Keep the
of
level with the top plate
or rock.
not let the
the tooth. Do
stroke towards the
of the tooth.
stroke.
from the steel on each return
every tooth. File all left
• Using light
front corner
•
• Put a few
hand cutters in one direction. Then move to the other
the right hand cutters the opposite
with a wire brush.
side and
in
Top Plate Filing Angle
CORRECT
Top Plate Filing Angle
More
than 30°
Less
than 30°
30°
INCORRECT
Top Plate Filing Angle
Cutting.
• LESS THAN 30° - For Cross
• CORRECT 30° - File holders are marked with guide
plate angle.
• MORE THAN 30° - Feathered Edge Dulls Quickly.
Side Plate Angle
CORRECT
Side Plate
Filing Angle
Backward
Slope
Hook
80°
INCORRECT
Side Plate Filing Angle
Depth Gauge Clearance
• CORRECT - 80° Produced automatically if correct
• HOOK - “Grabs” and dulls quickly. Increases po-
• BACKWARD SLOPE - Needs too much feed pres-
sure, causes excessive wear to bar and chain.
•
•
clearance.
Flat File
Depth Gauge Jointer
Restore
original
shape by
rounding
the front
After lowering each depth
gauge, restore original
shape by rounding the front.
Be careful not to damage
adjoining drive links with the
Depth gauges must be ad-
same direction the adjoin-
Guide Bar Maintenance
When the guide bar shows signs of wear, reverse it
on the tool to distribute the wear for maximum bar
life. The bar should be cleaned every day of use and
checked for wear and damage.
Feathering or burring of the bar rails is a normal
process of bar wear. Such faults should be smoothed
A bar with any of the following faults should be
replaced.
• Wear inside the bar rails which permits the chain to
lay over sideways.
• Bent guide bar.
• Cracked or broken rails.
• Spread rails.
Lubricate guide bars with a sprocket at their tip weekly.
Using a grease syringe, lubricate weekly in the lubri-
cating hole. Turn the guide bar and check that the lubri-
cation holes and chain groove are free from impurities.
NOTE:
Do not replace the screw with an ordinary
screw. Use only identical replacement parts from the
manufacturer when replacing parts.
Use a 3.96 mm (5/32") diameter round file and
holder.
The depth gauge should be maintained at a
clearance of 0.6 mm. Use a depth gauge tool for
checkingthe depth gauge clearances.
Use a flat file and a depth gauge jointer to lower all
gauges uniformly. Depth gauge jointers are
available in 0.5 mm to 0.89 mm Use a 0.63 mm
depth gauge jointer.
